World Health Organization Demeton-S-methyl - - Geneva W H O 1997 - 83 p. 24 cm. - IPCS :EHC 197 . Insectidies,Organophosphate -Toxicity ISBN: 92 4 157197 7 Subjects--Topical Terms: Insectidies,Organophosphate -Toxicity Dewey Class. No.: SERIALS / WHO